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152 N. 3rd. San Jose <br />The Tidelands Housing, San Francisco <br />Peter Rumsey, Principal <br />®Pr-iP,ITENERGY <br />There are great examples of all electric buildings for virtually every <br />building type that are cost effective. It is very easy for our firm to design <br />these systems, we are very familiar with them. <br />For Multifamily projects we are seeing a lot of developers use electric <br />heating with high levels of insulation in apartments that don't need <br />cooling. <br />All electric air-cooled VRF heat pumps are very common on multifamily <br />projects up to ten stories where cooling is needed; this is very cost <br />effective. <br />Developers are using VRF systems on small to medium sized commercial <br />buildings. Production home builders have been using central heat pump <br />heating and cooling units for many years. And we are seeing a surge in the <br />use of larger heat pumps for generating hot water systems. Central hot <br />water systems can have a cost premium, but it is very small as a <br />percentage of the building cost. <br />